While the cause of death has yet to be officially determined, TMZ reports that it was the lethal combination of cocaine, alcohol, and Viagra.

Kovar's history of substance abuse problems was well documented by reality TV cameras: after a series of erratic behavior, he left The Real World midseason to seek treatment for drug and alcohol problems.

Initially, rehab didn't take, and Kovar returned to treatment — and to reality TV — with a stint on Dr. Drew's Celebrity Rehab.